Changing EOL style to LF

1 files changed, 635 insertions, 635 deletions

diff --git a/system/database/drivers/postgre/postgre_driver.php b/system/database/drivers/postgre/postgre_driver.php
index 68622a22b..da0b0f23a 100644
--- a/system/database/drivers/postgre/postgre_driver.php
+++ b/system/database/drivers/postgre/postgre_driver.php
@@ -1,636 +1,636 @@
-<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');

-/**

- * CodeIgniter

- *

- * An open source application development framework for PHP 4.3.2 or newer

- *

- * @package		CodeIgniter

- * @author		ExpressionEngine Dev Team

- * @copyright	Copyright (c) 2008, EllisLab, Inc.

- * @license		http://codeigniter.com/user_guide/license.html

- * @link		http://codeigniter.com

- * @since		Version 1.0

- * @filesource

- */

-

-// ------------------------------------------------------------------------

-

-/**

- * Postgre Database Adapter Class

- *

- * Note: _DB is an extender class that the app controller

- * creates dynamically based on whether the active record

- * class is being used or not.

- *

- * @package		CodeIgniter

- * @subpackage	Drivers

- * @category	Database

- * @author		ExpressionEngine Dev Team

- * @link		http://codeigniter.com/user_guide/database/

- */

-class CI_DB_postgre_driver extends CI_DB {

-

-	var $dbdriver = 'postgre';

-	

-	var $_escape_char = '"';

-

-	/**

-	 * The syntax to count rows is slightly different across different

-	 * database engines, so this string appears in each driver and is

-	 * used for the count_all() and count_all_results() functions.

-	 */

-	var $_count_string = "SELECT COUNT(*) AS ";

-	var $_random_keyword = ' RANDOM()'; // database specific random keyword

-

-	/**

-	 * Connection String

-	 *

-	 * @access	private

-	 * @return	string

-	 */	

-	function _connect_string()

-	{

-		$components = array(

-								'hostname'	=> 'host',

-								'port'		=> 'port',

-								'database'	=> 'dbname',

-								'username'	=> 'user',

-								'password'	=> 'password'

-							);

-		

-		$connect_string = "";

-		foreach ($components as $key => $val)

-		{

-			if (isset($this->$key) && $this->$key != '')

-			{

-				$connect_string .= " $val=".$this->$key;

-			}

-		}

-		return trim($connect_string);

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Non-persistent database connection

-	 *

-	 * @access	private called by the base class

-	 * @return	resource

-	 */	

-	function db_connect()

-	{		

-		return @pg_connect($this->_connect_string());

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Persistent database connection

-	 *

-	 * @access	private called by the base class

-	 * @return	resource

-	 */	

-	function db_pconnect()

-	{

-		return @pg_pconnect($this->_connect_string());

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Select the database

-	 *

-	 * @access	private called by the base class

-	 * @return	resource

-	 */	

-	function db_select()

-	{

-		// Not needed for Postgre so we'll return TRUE

-		return TRUE;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Set client character set

-	 *

-	 * @access	public

-	 * @param	string

-	 * @param	string

-	 * @return	resource

-	 */

-	function db_set_charset($charset, $collation)

-	{

-		// @todo - add support if needed

-		return TRUE;

-	}

-

-	// --------------------------------------------------------------------

-	

-	/**

-	 * Version number query string

-	 *

-	 * @access	public

-	 * @return	string

-	 */

-	function _version()

-	{

-		return "SELECT version() AS ver";

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Execute the query

-	 *

-	 * @access	private called by the base class

-	 * @param	string	an SQL query

-	 * @return	resource

-	 */	

-	function _execute($sql)

-	{

-		$sql = $this->_prep_query($sql);

-		return @pg_query($this->conn_id, $sql);

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Prep the query

-	 *

-	 * If needed, each database adapter can prep the query string

-	 *

-	 * @access	private called by execute()

-	 * @param	string	an SQL query

-	 * @return	string

-	 */	

-	function _prep_query($sql)

-	{

-		return $sql;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Begin Transaction

-	 *

-	 * @access	public

-	 * @return	bool		

-	 */	

-	function trans_begin($test_mode = FALSE)

-	{

-		if ( ! $this->trans_enabled)

-		{

-			return TRUE;

-		}

-		

-		// When transactions are nested we only begin/commit/rollback the outermost ones

-		if ($this->_trans_depth > 0)

-		{

-			return TRUE;

-		}

-

-		// Reset the transaction failure flag.

-		// If the $test_mode flag is set to TRUE transactions will be rolled back

-		// even if the queries produce a successful result.

-		$this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;

-

-		return @pg_exec($this->conn_id, "begin");

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Commit Transaction

-	 *

-	 * @access	public

-	 * @return	bool		

-	 */	

-	function trans_commit()

-	{

-		if ( ! $this->trans_enabled)

-		{

-			return TRUE;

-		}

-

-		// When transactions are nested we only begin/commit/rollback the outermost ones

-		if ($this->_trans_depth > 0)

-		{

-			return TRUE;

-		}

-

-		return @pg_exec($this->conn_id, "commit");

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Rollback Transaction

-	 *

-	 * @access	public

-	 * @return	bool		

-	 */	

-	function trans_rollback()

-	{

-		if ( ! $this->trans_enabled)

-		{

-			return TRUE;

-		}

-

-		// When transactions are nested we only begin/commit/rollback the outermost ones

-		if ($this->_trans_depth > 0)

-		{

-			return TRUE;

-		}

-

-		return @pg_exec($this->conn_id, "rollback");

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Escape String

-	 *

-	 * @access	public

-	 * @param	string

-	 * @return	string

-	 */

-	function escape_str($str)	

-	{	

-		return pg_escape_string($str);

-	}

-		

-	// --------------------------------------------------------------------

-

-	/**

-	 * Affected Rows

-	 *

-	 * @access	public

-	 * @return	integer

-	 */

-	function affected_rows()

-	{

-		return @pg_affected_rows($this->result_id);

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Insert ID

-	 *

-	 * @access	public

-	 * @return	integer

-	 */

-	function insert_id()

-	{

-		$v = $this->_version();

-		$v = $v['server'];

-		

-		$table	= func_num_args() > 0 ? func_get_arg(0) : null;

-		$column	= func_num_args() > 1 ? func_get_arg(1) : null;

-		

-		if ($table == null && $v >= '8.1')

-		{

-			$sql='SELECT LASTVAL() as ins_id';

-		}

-		elseif ($table != null && $column != null && $v >= '8.0')

-		{

-			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);

-			$query = $this->query($sql);

-			$row = $query->row();

-			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $row->seq);

-		}

-		elseif ($table != null)

-		{

-			// seq_name passed in table parameter

-			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $table);

-		}

-		else

-		{

-			return pg_last_oid($this->result_id);

-		}

-		$query = $this->query($sql);

-		$row = $query->row();

-		return $row->ins_id;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * "Count All" query

-	 *

-	 * Generates a platform-specific query string that counts all records in

-	 * the specified database

-	 *

-	 * @access	public

-	 * @param	string

-	 * @return	string

-	 */

-	function count_all($table = '')

-	{

-		if ($table == '')

-			return '0';

-

-		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows'). " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));

-				

-		if ($query->num_rows() == 0)

-			return '0';

-

-		$row = $query->row();

-		return $row->numrows;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Show table query

-	 *

-	 * Generates a platform-specific query string so that the table names can be fetched

-	 *

-	 * @access	private

-	 * @param	boolean

-	 * @return	string

-	 */

-	function _list_tables($prefix_limit = FALSE)

-	{	

-		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";	

-		

-		if ($prefix_limit !== FALSE AND $this->dbprefix != '')

-		{

-			$sql .= " AND table_name LIKE '".$this->dbprefix."%'";

-		}

-		

-		return $sql;

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Show column query

-	 *

-	 * Generates a platform-specific query string so that the column names can be fetched

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @return	string

-	 */

-	function _list_columns($table = '')

-	{

-		return "SELECT column_name FROM information_schema.columns WHERE table_name ='".$table."'";

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Field data query

-	 *

-	 * Generates a platform-specific query so that the column data can be retrieved

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @return	object

-	 */

-	function _field_data($table)

-	{

-		return "SELECT * FROM ".$table." LIMIT 1";

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * The error message string

-	 *

-	 * @access	private

-	 * @return	string

-	 */

-	function _error_message()

-	{

-		return pg_last_error($this->conn_id);

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * The error message number

-	 *

-	 * @access	private

-	 * @return	integer

-	 */

-	function _error_number()

-	{

-		return '';

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Escape the SQL Identifiers

-	 *

-	 * This function escapes column and table names

-	 *

-	 * @access	private

-	 * @param	string

-	 * @return	string

-	 */

-	function _escape_identifiers($item)

-	{

-		if ($this->_escape_char == '')

-		{

-			return $item;

-		}

-

-		foreach ($this->_reserved_identifiers as $id)

-		{

-			if (strpos($item, '.'.$id) !== FALSE)

-			{

-				$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);  

-				

-				// remove duplicates if the user already included the escape

-				return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);

-			}		

-		}

-	

-		if (strpos($item, '.') !== FALSE)

-		{

-			$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;			

-		}

-		else

-		{

-			$str = $this->_escape_char.$item.$this->_escape_char;

-		}

-		

-		// remove duplicates if the user already included the escape

-		return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);

-	}

-			

-	// --------------------------------------------------------------------

-

-	/**

-	 * From Tables

-	 *

-	 * This function implicitly groups FROM tables so there is no confusion

-	 * about operator precedence in harmony with SQL standards

-	 *

-	 * @access	public

-	 * @param	type

-	 * @return	type

-	 */

-	function _from_tables($tables)

-	{

-		if ( ! is_array($tables))

-		{

-			$tables = array($tables);

-		}

-		

-		return implode(', ', $tables);

-	}

-

-	// --------------------------------------------------------------------

-	

-	/**

-	 * Insert statement

-	 *

-	 * Generates a platform-specific insert string from the supplied data

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @param	array	the insert keys

-	 * @param	array	the insert values

-	 * @return	string

-	 */

-	function _insert($table, $keys, $values)

-	{	

-		return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Update statement

-	 *

-	 * Generates a platform-specific update string from the supplied data

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @param	array	the update data

-	 * @param	array	the where clause

-	 * @param	array	the orderby clause

-	 * @param	array	the limit clause

-	 * @return	string

-	 */

-	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)

-	{

-		foreach($values as $key => $val)

-		{

-			$valstr[] = $key." = ".$val;

-		}

-		

-		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;

-		

-		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';

-	

-		$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);

-

-		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';

-

-		$sql .= $orderby.$limit;

-		

-		return $sql;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Truncate statement

-	 *

-	 * Generates a platform-specific truncate string from the supplied data

-	 * If the database does not support the truncate() command

-	 * This function maps to "DELETE FROM table"

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @return	string

-	 */	

-	function _truncate($table)

-	{

-		return "TRUNCATE ".$table;

-	}

-	

-	// --------------------------------------------------------------------

-

-	/**

-	 * Delete statement

-	 *

-	 * Generates a platform-specific delete string from the supplied data

-	 *

-	 * @access	public

-	 * @param	string	the table name

-	 * @param	array	the where clause

-	 * @param	string	the limit clause

-	 * @return	string

-	 */	

-	function _delete($table, $where = array(), $like = array(), $limit = FALSE)

-	{

-		$conditions = '';

-

-		if (count($where) > 0 OR count($like) > 0)

-		{

-			$conditions = "\nWHERE ";

-			$conditions .= implode("\n", $this->ar_where);

-

-			if (count($where) > 0 && count($like) > 0)

-			{

-				$conditions .= " AND ";

-			}

-			$conditions .= implode("\n", $like);

-		}

-

-		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;

-	

-		return "DELETE FROM ".$table.$conditions.$limit;

-	}

-

-	// --------------------------------------------------------------------

-	/**

-	 * Limit string

-	 *

-	 * Generates a platform-specific LIMIT clause

-	 *

-	 * @access	public

-	 * @param	string	the sql query string

-	 * @param	integer	the number of rows to limit the query to

-	 * @param	integer	the offset value

-	 * @return	string

-	 */

-	function _limit($sql, $limit, $offset)

-	{	

-		$sql .= "LIMIT ".$limit;

-	

-		if ($offset > 0)

-		{

-			$sql .= " OFFSET ".$offset;

-		}

-		

-		return $sql;

-	}

-

-	// --------------------------------------------------------------------

-

-	/**

-	 * Close DB Connection

-	 *

-	 * @access	public

-	 * @param	resource

-	 * @return	void

-	 */

-	function _close($conn_id)

-	{

-		@pg_close($conn_id);

-	}

-

-

-}

-

-

-/* End of file postgre_driver.php */

+<?php  if ( ! defined('BASEPATH')) exit('No direct script access allowed');
+/**
+ * CodeIgniter
+ *
+ * An open source application development framework for PHP 4.3.2 or newer
+ *
+ * @package		CodeIgniter
+ * @author		ExpressionEngine Dev Team
+ * @copyright	Copyright (c) 2008, EllisLab, Inc.
+ * @license		http://codeigniter.com/user_guide/license.html
+ * @link		http://codeigniter.com
+ * @since		Version 1.0
+ * @filesource
+ */
+
+// ------------------------------------------------------------------------
+
+/**
+ * Postgre Database Adapter Class
+ *
+ * Note: _DB is an extender class that the app controller
+ * creates dynamically based on whether the active record
+ * class is being used or not.
+ *
+ * @package		CodeIgniter
+ * @subpackage	Drivers
+ * @category	Database
+ * @author		ExpressionEngine Dev Team
+ * @link		http://codeigniter.com/user_guide/database/
+ */
+class CI_DB_postgre_driver extends CI_DB {
+
+	var $dbdriver = 'postgre';
+	
+	var $_escape_char = '"';
+
+	/**
+	 * The syntax to count rows is slightly different across different
+	 * database engines, so this string appears in each driver and is
+	 * used for the count_all() and count_all_results() functions.
+	 */
+	var $_count_string = "SELECT COUNT(*) AS ";
+	var $_random_keyword = ' RANDOM()'; // database specific random keyword
+
+	/**
+	 * Connection String
+	 *
+	 * @access	private
+	 * @return	string
+	 */	
+	function _connect_string()
+	{
+		$components = array(
+								'hostname'	=> 'host',
+								'port'		=> 'port',
+								'database'	=> 'dbname',
+								'username'	=> 'user',
+								'password'	=> 'password'
+							);
+		
+		$connect_string = "";
+		foreach ($components as $key => $val)
+		{
+			if (isset($this->$key) && $this->$key != '')
+			{
+				$connect_string .= " $val=".$this->$key;
+			}
+		}
+		return trim($connect_string);
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Non-persistent database connection
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */	
+	function db_connect()
+	{		
+		return @pg_connect($this->_connect_string());
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Persistent database connection
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */	
+	function db_pconnect()
+	{
+		return @pg_pconnect($this->_connect_string());
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Select the database
+	 *
+	 * @access	private called by the base class
+	 * @return	resource
+	 */	
+	function db_select()
+	{
+		// Not needed for Postgre so we'll return TRUE
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Set client character set
+	 *
+	 * @access	public
+	 * @param	string
+	 * @param	string
+	 * @return	resource
+	 */
+	function db_set_charset($charset, $collation)
+	{
+		// @todo - add support if needed
+		return TRUE;
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * Version number query string
+	 *
+	 * @access	public
+	 * @return	string
+	 */
+	function _version()
+	{
+		return "SELECT version() AS ver";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Execute the query
+	 *
+	 * @access	private called by the base class
+	 * @param	string	an SQL query
+	 * @return	resource
+	 */	
+	function _execute($sql)
+	{
+		$sql = $this->_prep_query($sql);
+		return @pg_query($this->conn_id, $sql);
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Prep the query
+	 *
+	 * If needed, each database adapter can prep the query string
+	 *
+	 * @access	private called by execute()
+	 * @param	string	an SQL query
+	 * @return	string
+	 */	
+	function _prep_query($sql)
+	{
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Begin Transaction
+	 *
+	 * @access	public
+	 * @return	bool		
+	 */	
+	function trans_begin($test_mode = FALSE)
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+		
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		// Reset the transaction failure flag.
+		// If the $test_mode flag is set to TRUE transactions will be rolled back
+		// even if the queries produce a successful result.
+		$this->_trans_failure = ($test_mode === TRUE) ? TRUE : FALSE;
+
+		return @pg_exec($this->conn_id, "begin");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Commit Transaction
+	 *
+	 * @access	public
+	 * @return	bool		
+	 */	
+	function trans_commit()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		return @pg_exec($this->conn_id, "commit");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Rollback Transaction
+	 *
+	 * @access	public
+	 * @return	bool		
+	 */	
+	function trans_rollback()
+	{
+		if ( ! $this->trans_enabled)
+		{
+			return TRUE;
+		}
+
+		// When transactions are nested we only begin/commit/rollback the outermost ones
+		if ($this->_trans_depth > 0)
+		{
+			return TRUE;
+		}
+
+		return @pg_exec($this->conn_id, "rollback");
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape String
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	string
+	 */
+	function escape_str($str)	
+	{	
+		return pg_escape_string($str);
+	}
+		
+	// --------------------------------------------------------------------
+
+	/**
+	 * Affected Rows
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function affected_rows()
+	{
+		return @pg_affected_rows($this->result_id);
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Insert ID
+	 *
+	 * @access	public
+	 * @return	integer
+	 */
+	function insert_id()
+	{
+		$v = $this->_version();
+		$v = $v['server'];
+		
+		$table	= func_num_args() > 0 ? func_get_arg(0) : null;
+		$column	= func_num_args() > 1 ? func_get_arg(1) : null;
+		
+		if ($table == null && $v >= '8.1')
+		{
+			$sql='SELECT LASTVAL() as ins_id';
+		}
+		elseif ($table != null && $column != null && $v >= '8.0')
+		{
+			$sql = sprintf("SELECT pg_get_serial_sequence('%s','%s') as seq", $table, $column);
+			$query = $this->query($sql);
+			$row = $query->row();
+			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $row->seq);
+		}
+		elseif ($table != null)
+		{
+			// seq_name passed in table parameter
+			$sql = sprintf("SELECT CURRVAL('%s') as ins_id", $table);
+		}
+		else
+		{
+			return pg_last_oid($this->result_id);
+		}
+		$query = $this->query($sql);
+		$row = $query->row();
+		return $row->ins_id;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * "Count All" query
+	 *
+	 * Generates a platform-specific query string that counts all records in
+	 * the specified database
+	 *
+	 * @access	public
+	 * @param	string
+	 * @return	string
+	 */
+	function count_all($table = '')
+	{
+		if ($table == '')
+			return '0';
+
+		$query = $this->query($this->_count_string . $this->_protect_identifiers('numrows'). " FROM " . $this->_protect_identifiers($table, TRUE, NULL, FALSE));
+				
+		if ($query->num_rows() == 0)
+			return '0';
+
+		$row = $query->row();
+		return $row->numrows;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show table query
+	 *
+	 * Generates a platform-specific query string so that the table names can be fetched
+	 *
+	 * @access	private
+	 * @param	boolean
+	 * @return	string
+	 */
+	function _list_tables($prefix_limit = FALSE)
+	{	
+		$sql = "SELECT table_name FROM information_schema.tables WHERE table_schema = 'public'";	
+		
+		if ($prefix_limit !== FALSE AND $this->dbprefix != '')
+		{
+			$sql .= " AND table_name LIKE '".$this->dbprefix."%'";
+		}
+		
+		return $sql;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Show column query
+	 *
+	 * Generates a platform-specific query string so that the column names can be fetched
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */
+	function _list_columns($table = '')
+	{
+		return "SELECT column_name FROM information_schema.columns WHERE table_name ='".$table."'";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Field data query
+	 *
+	 * Generates a platform-specific query so that the column data can be retrieved
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	object
+	 */
+	function _field_data($table)
+	{
+		return "SELECT * FROM ".$table." LIMIT 1";
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message string
+	 *
+	 * @access	private
+	 * @return	string
+	 */
+	function _error_message()
+	{
+		return pg_last_error($this->conn_id);
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * The error message number
+	 *
+	 * @access	private
+	 * @return	integer
+	 */
+	function _error_number()
+	{
+		return '';
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Escape the SQL Identifiers
+	 *
+	 * This function escapes column and table names
+	 *
+	 * @access	private
+	 * @param	string
+	 * @return	string
+	 */
+	function _escape_identifiers($item)
+	{
+		if ($this->_escape_char == '')
+		{
+			return $item;
+		}
+
+		foreach ($this->_reserved_identifiers as $id)
+		{
+			if (strpos($item, '.'.$id) !== FALSE)
+			{
+				$str = $this->_escape_char. str_replace('.', $this->_escape_char.'.', $item);  
+				
+				// remove duplicates if the user already included the escape
+				return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+			}		
+		}
+	
+		if (strpos($item, '.') !== FALSE)
+		{
+			$str = $this->_escape_char.str_replace('.', $this->_escape_char.'.'.$this->_escape_char, $item).$this->_escape_char;			
+		}
+		else
+		{
+			$str = $this->_escape_char.$item.$this->_escape_char;
+		}
+		
+		// remove duplicates if the user already included the escape
+		return preg_replace('/['.$this->_escape_char.']+/', $this->_escape_char, $str);
+	}
+			
+	// --------------------------------------------------------------------
+
+	/**
+	 * From Tables
+	 *
+	 * This function implicitly groups FROM tables so there is no confusion
+	 * about operator precedence in harmony with SQL standards
+	 *
+	 * @access	public
+	 * @param	type
+	 * @return	type
+	 */
+	function _from_tables($tables)
+	{
+		if ( ! is_array($tables))
+		{
+			$tables = array($tables);
+		}
+		
+		return implode(', ', $tables);
+	}
+
+	// --------------------------------------------------------------------
+	
+	/**
+	 * Insert statement
+	 *
+	 * Generates a platform-specific insert string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the insert keys
+	 * @param	array	the insert values
+	 * @return	string
+	 */
+	function _insert($table, $keys, $values)
+	{	
+		return "INSERT INTO ".$table." (".implode(', ', $keys).") VALUES (".implode(', ', $values).")";
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Update statement
+	 *
+	 * Generates a platform-specific update string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the update data
+	 * @param	array	the where clause
+	 * @param	array	the orderby clause
+	 * @param	array	the limit clause
+	 * @return	string
+	 */
+	function _update($table, $values, $where, $orderby = array(), $limit = FALSE)
+	{
+		foreach($values as $key => $val)
+		{
+			$valstr[] = $key." = ".$val;
+		}
+		
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+		
+		$orderby = (count($orderby) >= 1)?' ORDER BY '.implode(", ", $orderby):'';
+	
+		$sql = "UPDATE ".$table." SET ".implode(', ', $valstr);
+
+		$sql .= ($where != '' AND count($where) >=1) ? " WHERE ".implode(" ", $where) : '';
+
+		$sql .= $orderby.$limit;
+		
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Truncate statement
+	 *
+	 * Generates a platform-specific truncate string from the supplied data
+	 * If the database does not support the truncate() command
+	 * This function maps to "DELETE FROM table"
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @return	string
+	 */	
+	function _truncate($table)
+	{
+		return "TRUNCATE ".$table;
+	}
+	
+	// --------------------------------------------------------------------
+
+	/**
+	 * Delete statement
+	 *
+	 * Generates a platform-specific delete string from the supplied data
+	 *
+	 * @access	public
+	 * @param	string	the table name
+	 * @param	array	the where clause
+	 * @param	string	the limit clause
+	 * @return	string
+	 */	
+	function _delete($table, $where = array(), $like = array(), $limit = FALSE)
+	{
+		$conditions = '';
+
+		if (count($where) > 0 OR count($like) > 0)
+		{
+			$conditions = "\nWHERE ";
+			$conditions .= implode("\n", $this->ar_where);
+
+			if (count($where) > 0 && count($like) > 0)
+			{
+				$conditions .= " AND ";
+			}
+			$conditions .= implode("\n", $like);
+		}
+
+		$limit = ( ! $limit) ? '' : ' LIMIT '.$limit;
+	
+		return "DELETE FROM ".$table.$conditions.$limit;
+	}
+
+	// --------------------------------------------------------------------
+	/**
+	 * Limit string
+	 *
+	 * Generates a platform-specific LIMIT clause
+	 *
+	 * @access	public
+	 * @param	string	the sql query string
+	 * @param	integer	the number of rows to limit the query to
+	 * @param	integer	the offset value
+	 * @return	string
+	 */
+	function _limit($sql, $limit, $offset)
+	{	
+		$sql .= "LIMIT ".$limit;
+	
+		if ($offset > 0)
+		{
+			$sql .= " OFFSET ".$offset;
+		}
+		
+		return $sql;
+	}
+
+	// --------------------------------------------------------------------
+
+	/**
+	 * Close DB Connection
+	 *
+	 * @access	public
+	 * @param	resource
+	 * @return	void
+	 */
+	function _close($conn_id)
+	{
+		@pg_close($conn_id);
+	}
+
+
+}
+
+
+/* End of file postgre_driver.php */
 /* Location: ./system/database/drivers/postgre/postgre_driver.php */
\ No newline at end of file